Shuttle-box-operating mechanism for looms



(No Model.) 4 Sheets-Sheet 1. J. H. CROWLEY.

SHUTTLE B OXOPERATING MECHANISM FOR LOOMS.

Patented Mar. 10, 1885.

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N. PETERS. Fholo liklwgnpmr. Wnlinginm EC.

4 Sheets-Sheet 2.

(No Model.)

J. H[ CROWLEY. SHUTTLE BOX OPERATING MECHANISM FOR LOO MS.

No. 313,578. Patented Mar. 10,- 1-885.-

INVEJVTOR" (No Model.) 4 Sheets-Sheet 3 J H. CROWLEY.

SHUTTLE BOX OPERATING MECHANISM FOR LOOMS.

Patented Mar. 10, 1885.

INVENTOR N PETERS. PlwloLiDmgnyMr. Wuhingkm. D c.

(No Model.) 4 Sheets-Sheet 4,

1 J. H. CROWLEY. SHUTTLE BOX OPERATING MECHANISM FOR LOOMS. No. 313,578. Patented Mair. l0,.1'885.

WITNESSES N. PETERS. Phnlmblhognphn'. Washingim n.c.

Urnrnn STATES PATENT @mucn.

I JOHN H. CROWLEY, OF PHILADELPHIA, PENNSYLVANIA.

SHUTTLE-BOX-OPE RATING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 313,578, dated March 10,1885. Application filed June 18, 1883. (No moilelJ 1'0 all whomit may concern:

Be it known that I, JOHN H. CROWLEY, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Shuttle-Box-Operating Mechanism for Looms, of which the following is a specification.

The object of my invention is to provide simple, compact, and efficient mechanism for operating the shuttle-boxes of a loom; and this object I attain in the manner which I will now proceed to describe, reference being had to the accompanying drawings, in which- Figure 1 is a partly sectional side view of sufficient of aloom to illustrate myinvention; Fig. 2, a transverse section on the line 12, Fig. 1, lookingin the direction ofthe arrow 1; Fig. 3, a transverse section on the line 3 4, Fig. 1, looking in the direction of the arrow 2; Figs. 4 to 11, Sheet 2, perspective views of parts of the devices; and-Figs. 12 to 15, Sheet 3, diagrams illustrating the operation of the devices; Figs. 16 to 19, Sheet 4, being views illustrating modifications of my invention.

A represents one of the side frames of the loom; B, the crank-shaft; D, the-pivoted lay connected thereto; F, the dropvboxes; a, the

guided drop -boX rod, and G the cam-shaft driven from the crank-shaft B by spur-gearing, as shown by dotted lines.

To a pin, b, on a standard, H, bolted to the lower part of the frame A, is hung the dropbox lever J, one end of which is connected by a link, d, to the rod a, the opposite end having a counter-weight, c, and a pivoted brakeshoe, 6, adapted to a segmental arm, e, which is hung to the frame, and is acted upon by a spring, a so as to exercise a braking or retarding influence on the movement of the lever J.

Hung to the pin bis a lever, M, one arm, f, of which is grooved, and is guided by a recessed rib, g, on the lever J, the other arm, f, of the lever having a segmental end, in which are formed a series of notches for the entrance of the end of the short arm of a catch-lever,

reception of the end of a bent arm, 71, secured to a rock-shaft, h, which is adapted to a bearing in the standard H, and has another arm, h", connected by a rod, h", to an arm, L, hung to a bracket, 13, on a vertical standard, A, of the frame. The bracketicarries another arm, N, to, which is connected a rod, N, the lower end of which is slotted for adaptation to the shaft G, and has a toe, n, upon which acts a cam, n, on saidshaft. The outer end of the arm N carries a spindle, p, on which turns a wheel, P, carrying a pattern-chain, P, the pins of which actupon the arm L, as described hereinafter, a spring-pawl, s, acting on a ratchet-wheel, s, on the wheel, and serving to turn said wheel part way around on each descent of the arm N, a retaining-pawl, s", on thelatter preventing back movement of the wheel.

To the grooved face of the armf of the lever M is adapted an anti-friction roller, t, carried by the lower end of an arm, W, hung at the upper end to a pin on a bracket, 1;, secured to the frame A, another roller, t, on the arm WV, being under the influence of acam, w, on the shaft G, against which cam the said roller t is caused constantly to bear by means of a spring, w, connected at one end to the arm and at the other to a suitable stud on the frame A. Y

The operation of the device is as follows, reference being had to Figs. 12 to 15 of the drawings Supposing that the boxes have been raised to their full extent, as shown in Fig. 12, the lowest box, 4, being in line With the shuttlerace, the lowest notch, 4, of the lever M in engagement with the catch-lever K,

the pattern-wheel and chain at the limit ot" their downward movement, and the arm WV approaching the limit of its inward movement so as'to bring the roller t in line with the fulcrum-pin b of the levers J and M,where it will offer no resistance to the vibration of said lever M. The first step in effecting a change of boxes after-the roller t has reached a position in line with the fulcrum b is the re lease of the lever M from the control of the catch -lever K, which is effected by the action of the cam is on said lever, as shown in Fig. 13.- As soon as the notched arm f of the lever M is free from the control of the catch lever it drops, its weight, assisted by the weight of the arms h and L and rod h overcoming the weight of the arm f of the lever, and thus bringing the top notch, 1, in line with the end of the catch-lever. (See Fig. 13.) Supposing that it is desired to lower to the extent of three boxesthat is to say, so as to bring the box 2 in line with the shutt1e-race when the pattern-chain l? is elevated by the action of the cam n on the rod N and arm N, a pin on said chain strikes the lever L and raises the same, this movement being transmitted through the medium of the rod h arm h, shaft h, and arm h to the lever M, and being sufiicient in extent to bring the notch 2 of the arm f in line with the catch-lever, which is then released from the control of the cam 70,

enters the notch, and locks the leverM to the drop-box lever J. (See Fig. 14.) The arm f of the lever M is thus brought into a position which is eccentric in respect to the arc of a circle, in which the lower end of the arm W moves, and as the latter arm is thrust outward under the action of the cam w the said army, under control of the roller t, is depressed, alike movement being imparted to the drop-box lever, and the lowering of the boxes to the proper extentbeing thus effected. (See Fig. 15.) If it is desired to raise the drop-boxes, the lever M is adjusted so that its arm f is inclined downward from the path of the roller 15, hence as the arm W is swung outward the lever M, and with it the dropbox lever, will be raised. It will thus be seen that the movement of the drop-box lever is due to the eccentricity of the arm f in respect to the path of the roller 15, the extent of the eccentricity, and the consequent extent of movement imparted to the lever on each vibration of the arm W, being controlled by the pattern-chain 1?.

Various modifications of the devices shown within the scope of my invention will readily suggest themselves to those familiar with the construction of looms. For instance, a simple arm, f, instead of a lever, M, may be used. The lower end of the arm \V, instead of having a pin or roller adapted to a grooved arm, f, may have a block adapted to embrace said arm, and instead of being carried by a vibrating arm said pin, roller, or block may be carried by a reciprocating slide operated by a crank or its equivalent, either directly or through the medium of intervening gearing. Where I use the term pin, therefore, it should be understood as including a pin, roller, block, or other device for controlling the arm f. In Sheet 4 of the drawings I have shown four views embodying these modifications, Figs. 16 and 17 being side views, and Figs. 18 and 19 sections, respectively, on the line 5 6, Fig.'16, and 7 8, Fig. 17. In Figs.

16 and 18 the arm f projects from the side of a pivoted arm, f, which is embraced by a block, 1 at the lower end of the arm W, the character of the locking-lever K being changed to accord with the changed position of the armf. In Figs. 17 and 19 the armf of the lever M is at right angles to the arm f, and receives a pin, it, projecting from a slide, W, which is guided on a vertical rod, W, and is reciprocated by a crank, w, on the shaft G, said crank being connected to the slide by a rod, w.

The operation of these devices is practically the same as those shown in Figs. 1' to'15, and will be readily understood without further detailed description.

I claim as my invention 1. Drop-box mechanism in which are com bined a drop-box lever, an arm, f, pivoted in line with the fulcrum of the lever, a pin or equivalent device controlling said arm, means for vibrating or reciprocating the pin, and mechanism whereby the arm f is adjusted and locked to or released from the drop-box lever, as set forth.

2. The combination of the drop-box lever J, an arm, f, pivoted in line with the fulcrum of the lever, a pivoted arm, W, having a pin adapted to a groove in the arm f, a cam for vibrating said arm W, and means, substantially as described, for adjusting the arm f and for locking the same to and releasing it from the lever J, as set forth.

3. The combination of the drop-box lever J, the lever M, fulcrumed in line with the same, the catch-lever K, hung to the leverJ and adapted to engage with the arm f of the lever M, a cam for actuating said lever K, means for adjusting the lever M, a pin or equivalent device controlling the arm f of the lever, and mechanism for vibrating or reciprocating said pin, as set forth.

4. The combination of the drop-box lever -J, thelever M, fulcrumed in line therewith,

the arm L, connected to said lever M, the pattern-chain for acting on said arm L, a pin or equivalent device controlling the lever M, and

'means, substantially as described, for vibrating or reciprocating said pin for operating the pattern-chain and for locking the lever M to and releasing it from the lever J, as set forth.

5. The combination of the drop-box lever, the lever M, mechanism for locking the latter to and releasing it from the drop-box lever, the arm L, connected to the lever M,'the pattern-chain wheel, and mechanism for rotating, raising, and lowering the latter, as set forth.

In testimony whereof Ihave signed my name to this specification in the presence of two Bubscribing witnesses.

JOHN H. CROWLEY.

Witnesses 'HARRY L. ASHENFELTER,

HARRY SMITH.

IIO 

